Why do you think the tectile (Meissner) corpuscies are located relatively close to the surface of the skin rather than deep within the dermis? An individual who suffers a strong blow to the head may end up with a detached retina that causes visual problems. Why do you think the retina easily detaches from the posterior wall of the eye? What structure normally holds the retina in place? Susan, a 67.year-old female, is experiencing ataxia, or poor muscle coordination. Doctors perform a neurological exam, and they find that Susan is not positive for the Romberg test. Describe what these findings suggest about the source of Susan’s ataxia.